MCQOPTIONS
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MCQOPTIONS
This section includes 267 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
To attain the synchronous orbit, the launch of a satellite, is done from a place |
| A. | on equator |
| B. | on 30° latitude |
| C. | on 45° latitude |
| D. | on 60° latitude |
| Answer» B. on 30¬∞ latitude | |
| 252. |
The resultant of two forces acting at right angles is 34 kg and acting at 60° is 70 kg. The forces are |
| A. | 1 kg and 4 kg |
| B. | 2 kg and 3 kg |
| C. | 3 kg and 5 kg |
| D. | 3 kg and 5 kg |
| Answer» E. | |
| 253. |
A uniform rod 9 m long weighing 40 kg is pivoted at a point 2 m from one end where a weight of 120 kg is suspended. The required force acting at the end in a direction perpendicular to rod to keep it equilibrium, at an inclination 60° with horizontal, is |
| A. | 40 kg |
| B. | 60 kg |
| C. | 10 kg |
| D. | 100 kg. |
| Answer» D. 100 kg. | |
| 254. |
The forces which meet at one point and have their lines of action in different planes are called |
| A. | coplaner non-concurrent forces |
| B. | non-coplaner concurrent forces |
| C. | non-coplaner non-current forces |
| D. | intersecting forces |
| Answer» C. non-coplaner non-current forces | |
| 255. |
At a given instant ship A is travelling at 6 km/h due east and ship B is travelling at 8 km/h due north. The velocity of B relative to A is |
| A. | 7 km/hrs |
| B. | 2 km/hrs |
| C. | 1 km/hrs |
| D. | 10 km/hrs |
| Answer» E. | |
| 256. |
A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is |
| A. | 0.5 |
| B. | 0.4 |
| C. | 0.55 |
| D. | 30%. |
| Answer» C. 0.55 | |
| 257. |
The locus of the instantaneous centre of a moving rigid body, is |
| A. | straight line |
| B. | involute |
| C. | centroid |
| D. | spiral. |
| Answer» D. spiral. | |
| 258. |
The equation of motion of a particle starting from rest along a straight line is x = t3 - 3t2 + 5. The ratio of the accelerations after 5 sec and 3 sec will be |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 259. |
The beam shown in below figure is supported by a hinge at A and a roller at B. The reaction RA of the hinged support A of the beam, is |
| A. | 10.8 t |
| B. | 10.6 t |
| C. | 10.4 t |
| D. | 10.2 t. |
| Answer» E. | |
| 260. |
The centre of gravity of a homogenous body is the point at which the whole |
| A. | volume of the body is assumed to be concentrated |
| B. | area of the surface of the body is assumed to be concentrated |
| C. | weight of the body is assumed to be concentrated |
| D. | all the above. |
| Answer» D. all the above. | |
| 261. |
The vertical reaction at the support A of the structure shown in below figure, is |
| A. | 1 t |
| B. | 2 t |
| C. | 3 t |
| D. | 2.5 t. |
| Answer» D. 2.5 t. | |
| 262. |
A cable loaded with 0.5 tonne per horizontal metre span is stretched between supports in the same horizontal line 400 m apart. If central dip is 20 m, the minimum tension in the cable, will be |
| A. | 200 tonnes at the centre |
| B. | 500 tonnes at the centre |
| C. | 200 tonnes at the right support |
| D. | 200 tonnes at the left support. |
| Answer» C. 200 tonnes at the right support | |
| 263. |
The following factor affects the orbit of a satellite up to an altitude of 720 km from the earth's surface |
| A. | uneven distribution of the gravitational field |
| B. | gravity of the sun and the moon |
| C. | aerodynamic forces |
| D. | none of these. |
| Answer» E. | |
| 264. |
If three rigid rods are hinged together to form a triangle and are given rotary as well as translatory motion, the number of instantaneous centres of the triangle, will be |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 265. |
A retarding force on a body does not |
| A. | change the motion of the body |
| B. | retard the motion of the body |
| C. | introduce the motion of the body |
| D. | none of these. |
| Answer» C. introduce the motion of the body | |
| 266. |
A projectile is thrown at an angle a to the horizontal with α velocity v. It will have the maximum centripetal acceleration |
| A. | at the start |
| B. | at the top of the trajectory |
| C. | as it strikes the ground |
| D. | else where. |
| Answer» B. at the top of the trajectory | |
| 267. |
The centre of gravity of a triangle is at the point where three |
| A. | medians of the triangle meet |
| B. | perpendicular bisectors of the sides of the triangle meet |
| C. | bisectors of the angle of the triangle meet |
| D. | none of these. |
| Answer» B. perpendicular bisectors of the sides of the triangle meet | |